3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * Copyright (c) 2004 Michael Niedermayer
6 * This file is part of Libav.
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * Libav is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "libavutil/intreadwrite.h"
24 #include "libavutil/avstring.h"
25 #include "libavutil/log.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/pixdesc.h"
28 #include "libavutil/parseutils.h"
30 #include "avio_internal.h"
34 const AVClass
*class; /**< Class for private options. */
41 char *pixel_format
; /**< Set by a private option. */
42 char *video_size
; /**< Set by a private option. */
43 char *framerate
; /**< Set by a private option. */
52 static const IdStrMap img_tags
[] = {
53 { CODEC_ID_MJPEG
, "jpeg"},
54 { CODEC_ID_MJPEG
, "jpg"},
55 { CODEC_ID_LJPEG
, "ljpg"},
56 { CODEC_ID_PNG
, "png"},
57 { CODEC_ID_PNG
, "mng"},
58 { CODEC_ID_PPM
, "ppm"},
59 { CODEC_ID_PPM
, "pnm"},
60 { CODEC_ID_PGM
, "pgm"},
61 { CODEC_ID_PGMYUV
, "pgmyuv"},
62 { CODEC_ID_PBM
, "pbm"},
63 { CODEC_ID_PAM
, "pam"},
64 { CODEC_ID_MPEG1VIDEO
, "mpg1-img"},
65 { CODEC_ID_MPEG2VIDEO
, "mpg2-img"},
66 { CODEC_ID_MPEG4
, "mpg4-img"},
67 { CODEC_ID_FFV1
, "ffv1-img"},
68 { CODEC_ID_RAWVIDEO
, "y"},
69 { CODEC_ID_BMP
, "bmp"},
70 { CODEC_ID_GIF
, "gif"},
71 { CODEC_ID_TARGA
, "tga"},
72 { CODEC_ID_TIFF
, "tiff"},
73 { CODEC_ID_TIFF
, "tif"},
74 { CODEC_ID_SGI
, "sgi"},
75 { CODEC_ID_PTX
, "ptx"},
76 { CODEC_ID_PCX
, "pcx"},
77 { CODEC_ID_SUNRAST
, "sun"},
78 { CODEC_ID_SUNRAST
, "ras"},
79 { CODEC_ID_SUNRAST
, "rs"},
80 { CODEC_ID_SUNRAST
, "im1"},
81 { CODEC_ID_SUNRAST
, "im8"},
82 { CODEC_ID_SUNRAST
, "im24"},
83 { CODEC_ID_SUNRAST
, "sunras"},
84 { CODEC_ID_JPEG2000
, "jp2"},
85 { CODEC_ID_JPEG2000
, "jpc"},
86 { CODEC_ID_DPX
, "dpx"},
87 { CODEC_ID_PICTOR
, "pic"},
88 { CODEC_ID_XWD
, "xwd"},
89 { CODEC_ID_NONE
, NULL
}
92 static const int sizes
[][2] = {
104 static int infer_size(int *width_ptr
, int *height_ptr
, int size
)
108 for(i
=0;i
<FF_ARRAY_ELEMS(sizes
);i
++) {
109 if ((sizes
[i
][0] * sizes
[i
][1]) == size
) {
110 *width_ptr
= sizes
[i
][0];
111 *height_ptr
= sizes
[i
][1];
117 static enum CodecID
av_str2id(const IdStrMap
*tags
, const char *str
)
119 str
= strrchr(str
, '.');
120 if(!str
) return CODEC_ID_NONE
;
124 if (!av_strcasecmp(str
, tags
->str
))
129 return CODEC_ID_NONE
;
132 /* return -1 if no image found */
133 static int find_image_range(int *pfirst_index
, int *plast_index
,
137 int range
, last_index
, range1
, first_index
;
139 /* find the first image */
140 for(first_index
= 0; first_index
< 5; first_index
++) {
141 if (av_get_frame_filename(buf
, sizeof(buf
), path
, first_index
) < 0){
144 if (avio_check(buf
, AVIO_FLAG_READ
) > 0)
148 if (avio_check(buf
, AVIO_FLAG_READ
) > 0)
151 if (first_index
== 5)
154 /* find the last image */
155 last_index
= first_index
;
163 if (av_get_frame_filename(buf
, sizeof(buf
), path
,
164 last_index
+ range1
) < 0)
166 if (avio_check(buf
, AVIO_FLAG_READ
) <= 0)
169 /* just in case... */
170 if (range
>= (1 << 30))
173 /* we are sure than image last_index + range exists */
178 *pfirst_index
= first_index
;
179 *plast_index
= last_index
;
186 static int read_probe(AVProbeData
*p
)
188 if (p
->filename
&& av_str2id(img_tags
, p
->filename
)) {
189 if (av_filename_number_test(p
->filename
))
190 return AVPROBE_SCORE_MAX
;
192 return AVPROBE_SCORE_MAX
/2;
197 enum CodecID
ff_guess_image2_codec(const char *filename
)
199 return av_str2id(img_tags
, filename
);
202 #if FF_API_GUESS_IMG2_CODEC
203 enum CodecID
av_guess_image2_codec(const char *filename
){
204 return av_str2id(img_tags
, filename
);
208 static int read_header(AVFormatContext
*s1
, AVFormatParameters
*ap
)
210 VideoData
*s
= s1
->priv_data
;
211 int first_index
, last_index
, ret
= 0;
212 int width
= 0, height
= 0;
214 enum PixelFormat pix_fmt
= PIX_FMT_NONE
;
215 AVRational framerate
;
217 s1
->ctx_flags
|= AVFMTCTX_NOHEADER
;
219 st
= avformat_new_stream(s1
, NULL
);
221 return AVERROR(ENOMEM
);
224 if (s
->pixel_format
&& (pix_fmt
= av_get_pix_fmt(s
->pixel_format
)) == PIX_FMT_NONE
) {
225 av_log(s1
, AV_LOG_ERROR
, "No such pixel format: %s.\n", s
->pixel_format
);
226 return AVERROR(EINVAL
);
228 if (s
->video_size
&& (ret
= av_parse_video_size(&width
, &height
, s
->video_size
)) < 0) {
229 av_log(s
, AV_LOG_ERROR
, "Could not parse video size: %s.\n", s
->video_size
);
232 if ((ret
= av_parse_video_rate(&framerate
, s
->framerate
)) < 0) {
233 av_log(s
, AV_LOG_ERROR
, "Could not parse framerate: %s.\n", s
->framerate
);
237 #if FF_API_LOOP_INPUT
239 s
->loop
= s1
->loop_input
;
242 av_strlcpy(s
->path
, s1
->filename
, sizeof(s
->path
));
247 if (s1
->iformat
->flags
& AVFMT_NOFILE
)
251 st
->need_parsing
= AVSTREAM_PARSE_FULL
;
254 avpriv_set_pts_info(st
, 60, framerate
.den
, framerate
.num
);
256 if (width
&& height
) {
257 st
->codec
->width
= width
;
258 st
->codec
->height
= height
;
262 if (find_image_range(&first_index
, &last_index
, s
->path
) < 0)
263 return AVERROR(ENOENT
);
264 s
->img_first
= first_index
;
265 s
->img_last
= last_index
;
266 s
->img_number
= first_index
;
267 /* compute duration */
269 st
->duration
= last_index
- first_index
+ 1;
272 if(s1
->video_codec_id
){
273 st
->codec
->codec_type
= AVMEDIA_TYPE_VIDEO
;
274 st
->codec
->codec_id
= s1
->video_codec_id
;
275 }else if(s1
->audio_codec_id
){
276 st
->codec
->codec_type
= AVMEDIA_TYPE_AUDIO
;
277 st
->codec
->codec_id
= s1
->audio_codec_id
;
279 st
->codec
->codec_type
= AVMEDIA_TYPE_VIDEO
;
280 st
->codec
->codec_id
= av_str2id(img_tags
, s
->path
);
282 if(st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
&& pix_fmt
!= PIX_FMT_NONE
)
283 st
->codec
->pix_fmt
= pix_fmt
;
288 static int read_packet(AVFormatContext
*s1
, AVPacket
*pkt
)
290 VideoData
*s
= s1
->priv_data
;
293 int size
[3]={0}, ret
[3]={0};
295 AVCodecContext
*codec
= s1
->streams
[0]->codec
;
298 /* loop over input */
299 if (s
->loop
&& s
->img_number
> s
->img_last
) {
300 s
->img_number
= s
->img_first
;
302 if (s
->img_number
> s
->img_last
)
304 if (av_get_frame_filename(filename
, sizeof(filename
),
305 s
->path
, s
->img_number
)<0 && s
->img_number
> 1)
308 if (avio_open2(&f
[i
], filename
, AVIO_FLAG_READ
,
309 &s1
->interrupt_callback
, NULL
) < 0) {
312 av_log(s1
, AV_LOG_ERROR
, "Could not open file : %s\n",filename
);
315 size
[i
]= avio_size(f
[i
]);
317 if(codec
->codec_id
!= CODEC_ID_RAWVIDEO
)
319 filename
[ strlen(filename
) - 1 ]= 'U' + i
;
322 if(codec
->codec_id
== CODEC_ID_RAWVIDEO
&& !codec
->width
)
323 infer_size(&codec
->width
, &codec
->height
, size
[0]);
326 if (f
[0]->eof_reached
)
331 av_new_packet(pkt
, size
[0] + size
[1] + size
[2]);
332 pkt
->stream_index
= 0;
333 pkt
->flags
|= AV_PKT_FLAG_KEY
;
338 ret
[i
]= avio_read(f
[i
], pkt
->data
+ pkt
->size
, size
[i
]);
346 if (ret
[0] <= 0 || ret
[1]<0 || ret
[2]<0) {
348 return AVERROR(EIO
); /* signal EOF */
356 #if CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER
357 /******************************************************/
360 static int write_header(AVFormatContext
*s
)
362 VideoData
*img
= s
->priv_data
;
365 av_strlcpy(img
->path
, s
->filename
, sizeof(img
->path
));
368 if (s
->oformat
->flags
& AVFMT_NOFILE
)
376 static int write_packet(AVFormatContext
*s
, AVPacket
*pkt
)
378 VideoData
*img
= s
->priv_data
;
381 AVCodecContext
*codec
= s
->streams
[ pkt
->stream_index
]->codec
;
385 if (av_get_frame_filename(filename
, sizeof(filename
),
386 img
->path
, img
->img_number
) < 0 && img
->img_number
>1) {
387 av_log(s
, AV_LOG_ERROR
,
388 "Could not get frame filename number %d from pattern '%s'\n",
389 img
->img_number
, img
->path
);
393 if (avio_open2(&pb
[i
], filename
, AVIO_FLAG_WRITE
,
394 &s
->interrupt_callback
, NULL
) < 0) {
395 av_log(s
, AV_LOG_ERROR
, "Could not open file : %s\n",filename
);
399 if(codec
->codec_id
!= CODEC_ID_RAWVIDEO
)
401 filename
[ strlen(filename
) - 1 ]= 'U' + i
;
407 if(codec
->codec_id
== CODEC_ID_RAWVIDEO
){
408 int ysize
= codec
->width
* codec
->height
;
409 avio_write(pb
[0], pkt
->data
, ysize
);
410 avio_write(pb
[1], pkt
->data
+ ysize
, (pkt
->size
- ysize
)/2);
411 avio_write(pb
[2], pkt
->data
+ ysize
+(pkt
->size
- ysize
)/2, (pkt
->size
- ysize
)/2);
417 if(av_str2id(img_tags
, s
->filename
) == CODEC_ID_JPEG2000
){
418 AVStream
*st
= s
->streams
[0];
419 if(st
->codec
->extradata_size
> 8 &&
420 AV_RL32(st
->codec
->extradata
+4) == MKTAG('j','p','2','h')){
421 if(pkt
->size
< 8 || AV_RL32(pkt
->data
+4) != MKTAG('j','p','2','c'))
423 avio_wb32(pb
[0], 12);
424 ffio_wfourcc(pb
[0], "jP ");
425 avio_wb32(pb
[0], 0x0D0A870A); // signature
426 avio_wb32(pb
[0], 20);
427 ffio_wfourcc(pb
[0], "ftyp");
428 ffio_wfourcc(pb
[0], "jp2 ");
430 ffio_wfourcc(pb
[0], "jp2 ");
431 avio_write(pb
[0], st
->codec
->extradata
, st
->codec
->extradata_size
);
432 }else if(pkt
->size
< 8 ||
433 (!st
->codec
->extradata_size
&&
434 AV_RL32(pkt
->data
+4) != MKTAG('j','P',' ',' '))){ // signature
436 av_log(s
, AV_LOG_ERROR
, "malformed JPEG 2000 codestream\n");
440 avio_write(pb
[0], pkt
->data
, pkt
->size
);
451 #endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */
453 #define OFFSET(x) offsetof(VideoData, x)
454 #define DEC AV_OPT_FLAG_DECODING_PARAM
455 static const AVOption options
[] = {
456 { "pixel_format", "", OFFSET(pixel_format
), AV_OPT_TYPE_STRING
, {.str
= NULL
}, 0, 0, DEC
},
457 { "video_size", "", OFFSET(video_size
), AV_OPT_TYPE_STRING
, {.str
= NULL
}, 0, 0, DEC
},
458 { "framerate", "", OFFSET(framerate
), AV_OPT_TYPE_STRING
, {.str
= "25"}, 0, 0, DEC
},
459 { "loop", "", OFFSET(loop
), AV_OPT_TYPE_INT
, {.dbl
= 0}, 0, 1, DEC
},
464 #if CONFIG_IMAGE2_DEMUXER
465 static const AVClass img2_class
= {
466 .class_name
= "image2 demuxer",
467 .item_name
= av_default_item_name
,
469 .version
= LIBAVUTIL_VERSION_INT
,
471 AVInputFormat ff_image2_demuxer
= {
473 .long_name
= NULL_IF_CONFIG_SMALL("image2 sequence"),
474 .priv_data_size
= sizeof(VideoData
),
475 .read_probe
= read_probe
,
476 .read_header
= read_header
,
477 .read_packet
= read_packet
,
478 .flags
= AVFMT_NOFILE
,
479 .priv_class
= &img2_class
,
482 #if CONFIG_IMAGE2PIPE_DEMUXER
483 static const AVClass img2pipe_class
= {
484 .class_name
= "image2pipe demuxer",
485 .item_name
= av_default_item_name
,
487 .version
= LIBAVUTIL_VERSION_INT
,
489 AVInputFormat ff_image2pipe_demuxer
= {
490 .name
= "image2pipe",
491 .long_name
= NULL_IF_CONFIG_SMALL("piped image2 sequence"),
492 .priv_data_size
= sizeof(VideoData
),
493 .read_header
= read_header
,
494 .read_packet
= read_packet
,
495 .priv_class
= &img2pipe_class
,
500 #if CONFIG_IMAGE2_MUXER
501 AVOutputFormat ff_image2_muxer
= {
503 .long_name
= NULL_IF_CONFIG_SMALL("image2 sequence"),
504 .extensions
= "bmp,dpx,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
505 "ppm,sgi,tga,tif,tiff,jp2,xwd",
506 .priv_data_size
= sizeof(VideoData
),
507 .video_codec
= CODEC_ID_MJPEG
,
508 .write_header
= write_header
,
509 .write_packet
= write_packet
,
510 .flags
= AVFMT_NOTIMESTAMPS
| AVFMT_NODIMENSIONS
| AVFMT_NOFILE
513 #if CONFIG_IMAGE2PIPE_MUXER
514 AVOutputFormat ff_image2pipe_muxer
= {
515 .name
= "image2pipe",
516 .long_name
= NULL_IF_CONFIG_SMALL("piped image2 sequence"),
517 .priv_data_size
= sizeof(VideoData
),
518 .video_codec
= CODEC_ID_MJPEG
,
519 .write_header
= write_header
,
520 .write_packet
= write_packet
,
521 .flags
= AVFMT_NOTIMESTAMPS
| AVFMT_NODIMENSIONS